work on Windows 10 is not guaranteed !
google for help or try to install Directx9

differences 0.163 from 0.134(0.082) were in additional files in ShaderOverDax1 folder (with them 0.163 looks worse ) wich i removed and there is no more reason to use 0.134 exception ssao (on my opinion 0.134 has better ssao than 0.163 )
so medium settings remains 0.134 and for low settings 0.163 return
(0.163 detailed shadows anyway doesn't work on the last patch)

removed blurring effect
added very low settings
the color of sunlight is now more natural

updated shader now less foggy and a bit more shiny
(previous shader in optional folder) new screens are attached

updated timecyc new sunnywindy and cloudy weather

greatly increased sun haze and a bit ssao

p.s

and this is the end of my graphic modding for GTAIV
I did the best that I could ! bye